wifi: implement PMK cache interface and callback

Bug: 36505680
Test: atest VtsHalWifiSupplicantV1_3TargetTest
Test: connect EAP access point and verify PMK cache works correctly.
Change-Id: I11cf80615839277f2b57906085aac4378dd2d550
diff --git a/wpa_supplicant/notify.c b/wpa_supplicant/notify.c
index bd16fed..ebefd48 100644
--- a/wpa_supplicant/notify.c
+++ b/wpa_supplicant/notify.c
@@ -1163,3 +1163,12 @@
 	wpas_hidl_notify_dpp_fail(wpa_s);
 #endif /* CONFIG_DPP */
 }
+
+void wpas_notify_pmk_cache_added(struct wpa_supplicant *wpa_s,
+				 struct rsn_pmksa_cache_entry *entry)
+{
+	if (!wpa_s)
+		return;
+
+	wpas_hidl_notify_pmk_cache_added(wpa_s, entry);
+}